You broke my site --- again! Why do you do this? Do you own more than one computer? You obviously have a caching issue on the computer you're using, thinking that your plugin is properly upgraded for the latest version of WordPress. Well it's not!
Please try your own plugin before you make an upgrade available! If you're worrying only about your plugin working with the current version of WordPress, what about everyone that has your plugin already in service -- has successfully upgraded to 3.4.2 -- and it's working perfectly!? Now what? Now you come along with that pesky reminder that your plugin needs to be upgraded. I went back to the old one and now that doesn't work either. No surprise there! Here I sit with nothing.
Buy another computer so you can try your own work.